Feed-water heater for steam-boilers



(No Model.)

F. DOYLE.

` i, PBBDWATBR'HEATER PoR STEAM BoILERs.

No. 314.521. Patented Mar, 24, 1885.

y *AMWMOR N* @l/fm N. PETERS. Pnammlwgmpxwn wnnin mmmm c ihvrrnn Stearns Paritair Orifice@ FRANK DOYLE, OF ELGIN, ILLTNOIS.

FEED-WATER HEATER FOR STEAM-BOILERS.

JPECIFICATION forming pari: of Letters Patent No. 314,521, dated March 24, 1335. Application till-d August i884. (No model.)

T0 all whom it may concern:

Beit known that I. FRANK DOYLE, of Eli' gin, in the county otKane and State of Illi-` nois, have invented certain new and useful Improvements in Feed -\Vater Heaters foi" quire very little heat to convert it into steam,

and thus no time will be lost by reason of the steam going down, as is usual where the cool or cold water is fed; and it consists in certain details of construction and arrangement of parts, as will be hereinafter fully described, and pointed out inthe claims at the end et' this speeilieation.

In the accompanying drawings, Figure l represents a view, partly in section, of myimproved water-heater applied to a steam-boiler; Fig. 2, a view of a moditied arrangement ot' the heater proper.

A represents a steam-boiler. ot' thc ordinary or any preferred construction, provided with the steam-dome and tubular llues, as usual.

Across the ends of the tubular tlues is secured a coil of pipe, B, which is exposed to the direct action ofthe lire, formed of straight pieces of pipe jointed at their ends by connecting-pieces, as shown; or it may consist of a single piece of4 pipe bent in a similar manner. One end of this coil is connected to the pump furnishing the water-supply, and the other is connected by means of the pipe C with the water-heating device.

D represents my improved heater, consisting ot' an outer chamber, E, and an inner chamber, F. The outer chamber, E, consists ot a long cylinder made of boiler-iron, and provided with a removable top, E', securely fastened by bolts, and made steam-tight by means ot' suitable packing, and being also provided at its upper end with the pipe E2, leading to the engine, for conveying the exhauststeam to the chamber, and with asutable exhaust-pipe, E3, at its lower end.

Supported in any suitable manner within the chamber E is a chamber or reservoir, F, for containing the feed-water, said chamber being surrounded by a coil of pipe, G, formed either of straight pipes jointed at their ends by U-shaped connections or of a single piece of pipe bent into a coil, and one end of this coil is connected with the coil B onthe boiler, and its other end enters the chamber F at its top, extends downward a short distance, and is perforated, as shown, for the purpose of spraying the water as it enters the chamber and exposing it to the action of thelive steam admitted tov the chamber through the pipe H. connecting directly with the steam-dome ot' lthe boiler. The lower end of the chamber F -forms a settling-chamber for the mud, dirt, `&c., that would settle at the bottom, and a suitable man-hole, l, is provided, so that this chamber can be cleaned byhand, if desired, and it is also provided with apipe, (l, through which the mud, dirt, die., can' be blown out by the steam-pressure. This settling-chamber may, if desired, be extended below the outer chamber, as shown in Fig. A2, and the connection to the supply-pump and to the boiler, and the man-hole for cleaning out the settling-chamber be provided in the extension, which will obviate the necessity of perforating the outer cylinder for the passage through it of said pipes, a suitable stuffing-box, M, being provided for preventing the escape of steam between the two chambers. A surface blow-oftl is also provided at the upper end of the chamber through a portion ot' the length ot the steam-pipe H from the boiler, a cock, K, being provided for this purpose.

The water is passed from the reservoir F to the boiler through the pipe L, as shown.

The water and sediment in the coil G can be blown out, when necessary, by opening the cock C in the pipe C, and the cock in the pipe I-I from the boiler.

The operation of the device is as follows: The water enters the coil of pipe B from the pump supplying it, and is heated during its passage, thence is delivered to the vertical coil G, and is heated again by the exhauststeam from the engine,which enters the outer his IOL

chamber of the heater through pipe E2 and has its exit at E3, and it is sprayed from the end of the coil G into the inner chamber or reservoir, Where it is heated by the live steam from the Y boiler to a very high temperature. When it is desired to feed water to the boiler, the cock in pipe L is opened, and the Water is fed by gravity, the steam-pressure in both the boiler and reservoir being equal, and the column of water in the reservoir being higher than that in the boiler.

It will be noticed that the water fed to the boiler is taken from a point in the reservoir where the water is the clearest, the lighter impurities, &c., floating on the surface, and the heavier sediment-mnd` Ste-descending to the settling-chamber at the bottom, where they can be blown oii, as described; also, that the steam from the engine usually exhausted into the open air is utilized to keep the Water in the reservoir at an even temperature.

I claim as my inventionl. In a feed-water heater, the combination, with the inner reservoir, thc outer shell, and the exhaust-steam space between them, of a pipe for delivering` the water into the reservoir in the form of a spray, and a pipe connecting saidreservoir directly with the boiler, whereby the Water sprayed from the su pply-liiipe is subjected to the action of the highly-heated live steam, substantially as described.

2. In a feed-Water-heating device, the combination, with the inner reservoir or chamber and the coil connected to the Water-supply surrounding it, and having its end extended within said chamber' and perforated, as shown, of the supply-pipe for admitting live steam into the reservoir, whereby the water as it is sprayed 3. The combination, with the boiler having the coil B at the end thereof, of the feed-Water heater having the 4inner steam-jacketed water chamber or reservoir, and the Water and steam supply pipes leading to said reservoir, substantiall y as described.

4. The combination, in a Water-heating device, ot the coil in which the Water is heated directly by the re, the inner chamber for containing the Water, and a coil surrounding said chamber connected to the water-supply and heated by the exhaust-steam from the engine, substantiall y as described.

5. In combination with the Water-heating coil and the jacketed reservoir,- the water-pipe leading from the coil into the steam-chamber, extending around the reservoir and terminating` within the latter at or near the top, the steam-pipe extending from the boiler to the reservoir at the top, and the supply-pipe connecting the boiler and reservoir at or near the middle, substantially as and for the purpose set forth.

6. In a feedewater heater. the combination,

with the reservoir connected to the boiler', as described, of the steam jacket communicating with the exhaust, and the waterlsupply pipe extending from the water-heater within the steam -jacket and around the reservoir, to which latter said pipe is connected at the top andin line with the steam-pipe from the boiler, substantially as and for the purpose set forth.

FRANK DOYLE. XVitnesses:

D. C. JOHNSTON, JOHN LYoNs. 

